CALCULATION OF THE DIMENSIONS AND DYNAMICS OF THE FORMATION
OF LOCAL EXPLOSION-HAZARDOUS ZONES IN PROPAGATION 
AND COMBUSTION OF HYDROGEN WITHIN A BUILDING
S. V. Puzach

UDC 614.841.4-536.242

On the basis of numerical calculations by a three-dimensional 
mathematical model, the author revealed some special features of heat 
and mass transfer within a building in the inflow of hydrogen at the 
floor level and subsequent detonation combustion of a local hydrogen-air 
mixture upon its ignition on the ceiling surface. By generalizing 
calculation results, the author obtained formulas for determining 
the height of a local explosion-hazardous zone which is formed above 
the source of hydrogen inflow. It is shown that in detonation combustion, 
local explosion- and fire-hazardous zones near the source of ignition 
can be destroyed and shifted to the lower and upper parts of the building 
toward the wall which is opposite to the opening.

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